63280960640 has 64 divisors (see below), whose sum is σ = 151317263160. Its totient is φ = 25306324992.

The previous prime is 63280960601. The next prime is 63280960657. The reversal of 63280960640 is 4606908236.

It can be written as a sum of positive squares in 4 ways, for example, as 14149578304 + 49131382336 = 118952^2 + 221656^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 63280960591 and 63280960600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3457754 + ... + 3476006.

Almost surely, 2^63280960640 is an apocalyptic number.

It is an amenable number.

63280960640 is an abundant number, since it is smaller than the sum of its proper divisors (88036302520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63280960640 is a wasteful number, since it uses less digits than its factorization.

63280960640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23689 (or 23677 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 63280960640 in words is "sixty-three billion, two hundred eighty million, nine hundred sixty thousand, six hundred forty".